MMW-PMCH-0053

This apparatus demonstrates the independence of horizontal and vertical velocities.

It comprises a polished wooden block 200 mm long, which is pivoted an
L-section metal launching bar

180 mm long. The bar is spring loaded and
provided with a trigger catch. A small hole near each end of the bar
serves to locate a 18 mm diameter steel

ball. As and when the catch is
released one ball drops vertically while the other is projected
horizontally. The fact that the vertical velocities of

both balls are
the same at any instant, despite the fact that one has a large
horizontal component, is shown by the fact that both hit the floor

at
the same instant.





The apparatus is supplied complete with a pair of steel balls of 18 mm diameter which is stored in a covered recess

in the wooden body.